题目：连续金属壳体结构的设计

Designofcontinuous metallic shell structures

时间：2022年5月20日周五16：00－17：00

地点：腾讯会议 ID：93382698531

腾讯直播间：https://meeting.tencent.com/l/hA1SrLFrwFwl

报告人：王洁（英国巴斯大学，建筑与土木工程系）

主持人：胡楠（土木工程系），康澜（土木工程系）

欢迎广大师生参加！

土木与交通学院

2022年5月18日

报告人简介：

王洁博士是英国巴斯大学结构工程助理教授、英国结构工程师协会（IStructE）委员会委员、欧洲钢结构规范编委会成员。博士毕业于帝国理工大学，在博士（2013-2016）和博士后（2016-2018）期间分别与英国皇家工程院L Gardner院士和JM Rotter院士从事高性能钢结构和高耸连续壳体的研究。科研成果发表SCI 期刊和国际会议论文30余篇（10篇一作通讯），谷歌学术期刊引用415（单篇最高115）。其针对高耸连续壳体所提出的设计公式被采纳于新一代欧洲规范《EN1993-1-6》，大大提高了风电支撑结构的设计时效，节省了繁琐的迭代运算，并被英国标准协会（BSI）聘用为欧洲钢结构规范workinggroup小组成员。第一次提出了适用于钢结构增材建造的波纹板设计，提高了未来薄壁钢结构的屈曲承载力，获得英国主流科研基金（包括IStructE, BRE和EPSRC）约170万元。

Dr Jie Wang is an Assistant Professor of Structural Engineering at the University of Bath, UK, a Committee Member of the Institute of Structural Engineers West County Regional Group IStructE WCRG), and a Committee Member of Eurocode 3 for steel structures design. Dr Jie Wang graduated from Imperial College London with a Ph.D. degree. During the Ph.D. (2013-2016) and post-doctoral (2016-2018) periods, she worked with the Fellows of the Royal Academy of Engineering, Prof.L Gardner and Prof. JM Rotter, respectively, on research topics of high-performance steel structural design and shell structures. Her work has been published in 22 SCI journal papers (10 as first /corresponding author) and 9 international conference papers (6 as first/corresponding author), with 415 citations in Google Scholar (highest single paper citation of 115) and an H-index of 9. The design formulas she proposed for shell structures have been adopted in the new generation of Eurocode EN1993-1-6, which has greatly improved the design efficiency of wind turbine support towers and saved tedious iterative operations. She has also proposed for the first time, a beneficial imperfection pattern for plated steel structures that is suitable for additive manufacturing construction of steel, which improves the buckling resistance of future thin-walled steel structures. This research idea has received about 1.7 million RMB funding from mainstream funding bodies including IStructE, BRE and EPSRC.

报告摘要：

椭圆化是在金属圆柱壳受弯时一种常见的几何非线性现象。与工程设计广泛使用的线性弹性抗力相比，根据不同的几何形状和加载条件，椭圆化现象可以降低高达50%的抗力。然而，直到最近，这一现象才被考虑到实际结构设计当中(欧洲规范3)，尽管受弯是圆柱形壳的基本荷载情况之一，出现在诸如风力涡轮机支撑塔受横向荷载、受梁柱作用的圆形空心管结构、以及受弯的工业管道等场景中。鉴于椭圆化是壳体设计的一个主要部分，作为工程师的我们，必须正确地理解与认识这种现象，以便获得安全和高效的设计。在本次讲座上，将介绍基本荷载情况下的椭圆化效应的一系列详细研究，并探讨未来的研究方向。

Ovalisation is a geometrically nonlinear phenomenon that can happen in metallic cylindrical shells subject to bending. Depending on the geometry and the loading condition, ovalisation can lead to up to 50% reduction in the resistance of a cylindrical shell compared to its linear elastic resistance as widely used by designers. However, only until recently, this phenomenon has been taken into account in practical design (Eurocode 3) despite the fact that bending is such a fundamental loading case for cylindrical shells, e.g. wind turbine support towers subject to lateral load, structural circular hollow section tubes subject to beam-column action, and industrial pipes and pipelines subject to bending, etc. Since ovalisation forms a major part in shell design, as engineers we must be able to understand and correctly characterise this phenomenon in order to perform a safe and efficient design. In the seminar, detailed studies of ovalisation effects in a range of fundamental loading cases will be introduced and future directions of research will be discussed.